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Finding the Fourth Proportional to 180,872.78, 249,619.39 and 100,326.33

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Solution

The fourth proportional to 180,872.78, 249,619.39 and 100,326.33 is: 138,458.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,872.78 : 249,619.39 = 100,326.33 : x
  2. Step 2: Convert to fraction form
    180,872.78/249,619.39 = 100,326.33/x
  3. Step 3: Cross multiply
    180,872.78x = 249,619.39 × 100,326.33
  4. Step 4: Simplify right side
    180,872.78x = 25,043,397,044.72
  5. Step 5: Solve for x
    x = 25,043,397,044.72/180,872.78
  6. Step 6: Final answer
    x = 138,458.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.